Value Collection R57001131 Hex Head Cap Screw 5/16-24

Product Description

The VALUE COLLECTION R57001131 is a fully threaded hex head cap screw in 5/16-24 UNF thread, sized at 1-1/2 inches under the head. Manufactured from 18-8 stainless steel with no additional finish coating, this fastener provides reliable corrosion resistance in wet, chemical-exposed, and outdoor environments. The fine thread (UNF) profile offers stronger thread engagement and better resistance to loosening under vibration compared to coarse thread equivalents. It is installed using a standard hex wrench or socket and is suited for mechanical assembly work across HVAC, plumbing, electrical, and general trade applications.

This screw is appropriate for use in residential and light commercial mechanical systems where a corrosion-resistant, fine-thread fastener is required. The 18-8 stainless steel construction makes it a common choice for panel assemblies, equipment mounting, and structural fastening in environments where carbon steel hardware would corrode. Trade professionals including HVAC technicians, plumbers, and electricians use this type of fastener for equipment brackets, cover plates, and access panel hardware.

Key Features

• 5/16-24 UNF fine thread for strong thread engagement and vibration resistance
• 1-1/2 inch length under head suits standard bracket and panel fastening applications
• 18-8 stainless steel construction provides corrosion resistance without surface coating
• Fully threaded shank allows maximum thread engagement across the full grip length
• Uncoated finish maintains dimensional consistency and allows field modification if needed
• Hex head drive accepts standard sockets, wrenches, and nut drivers

Compatibility

Designed as a standard inch-system hex head cap screw for use in any application requiring a 5/16-24 UNF fully threaded fastener in 18-8 stainless steel.

Installation Notes

Install using an appropriately sized hex socket or open-end wrench. Ensure mating threads are clean and free of debris before installation to avoid cross-threading, which is especially important with fine UNF thread profiles. When fastening into aluminum or dissimilar metals, apply an anti-seize compound to prevent galvanic corrosion between the stainless fastener and the base material. Follow applicable equipment manufacturer torque specifications when tightening to prevent thread damage.